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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20 and N26 Turbo Engine / Drivetrain / Exhaust Modifications > Does your 328i M Performance exhaust come with a valve?
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      03-07-2013, 08:34 PM   #1
XRS
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Does your 328i M Performance exhaust come with a valve?

Would like to ask those that have done this mod, does one of the outlets have the e valve like the stock muffler? Realoem shows otherwise.
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      03-07-2013, 10:22 PM   #2
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Yes, mine does. It was made in the UK.
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Last edited by Dabaitu; 03-08-2013 at 08:42 PM. Reason: Fact checked :P
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      03-08-2013, 08:16 AM   #3
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Thanks for your reply. I saw your thread and it looks like the valve is there (like the stock muffler). Anyone tried disconnecting this? Wonder if it's like the golf tee mod on the 335..
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      03-08-2013, 10:42 AM   #4
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Quote:
Originally Posted by XRS View Post
Thanks for your reply. I saw your thread and it looks like the valve is there (like the stock muffler). Anyone tried disconnecting this? Wonder if it's like the golf tee mod on the 335..
You can disable it just like the golf t mod but it actually makes a difference in performance. When you step on the gas it closes the flap to build more back pressure for more low end torque. When you hit around 3k rpm and your turbos spool up it opens the flap for more flow.
I could be wrong but that is what I noticed
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      03-08-2013, 11:43 AM   #5
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Did you get an error code when you disabled it?
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      03-08-2013, 05:12 PM   #6
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Here is my M Performance exhaust with the valve.
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2013 BMW F30 320i - M-Sport, Alpine White, M Sport suspension and brakes, Sport AT, VSS, PDC, Xenon, High-beam assistant, Harman/Kardon, Extended BT, Rims 403M (summer 19") and 397 (winter 18"), M Performance: Exhaust, Rear Bumper Diffuser, Carbon fiber mirror caps, Carbon fiber rear spoiler, Black kidney grilles, Floor mats. 3M Brushed Black Metallic vinyl wrap roof.
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      03-08-2013, 05:49 PM   #7
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Quote:
Originally Posted by XRS View Post
Did you get an error code when you disabled it?
You get a ghost code when you disable it you wont be able yo clear it like regular codes
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      03-08-2013, 08:42 PM   #8
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Fixed my earlier post.
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